Despite some of my previous entries, it’s a fact that I really know very little about Chinese writing (I think I can recognize the characters 1,2,3). But if I really had to figure out what was going on the first place I would probably go to is Yale Chinese Mac which started back in the Mac Classic days.
Ironically though, the site is no longer just Chinese on a Mac, but includes information on Chinese on Windows, Chinese on Palm Pilot, encodings, free fonts and more. Many mysteries can be resolved here. If only I could find one of these for every script!